lily vs wood lily

lily and wood lily both are nouns.

Word	Noun	Adjective	Verb	Adverb
lily	Yes	No	No	No
wood lily	Yes	No	No	No

As nouns, wood lily is a hyponym of lily; that is, wood lily is a word with a more specific, narrower meaning than lily:

lily: any liliaceous plant of the genus Lilium having showy pendulous flowers
wood lily: lily of eastern North America having orange to orange-red purple-spotted flowers

lily (noun)	wood lily (noun)
any liliaceous plant of the genus Lilium having showy pendulous flowers	lily of eastern North America having orange to orange-red purple-spotted flowers
	any liliaceous plant of the genus Trillium having a whorl of three leaves at the top of the stem with a single three-petaled flower